PatchTheCVEcjson vulnerabilities and fixes
Recent CVEs affecting cjson, with upgrade or downgrade steps. 3 tracked.
cjson has 3 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 3. Most recent: 2026-07-29. Highest priority: CVE-2026-67215 (score 49/100).
- CVE-2026-67215 HIGH 7.5 UPGRADE cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC
- CVE-2026-67216 MEDIUM 5.9 UPGRADE cJSON through 1.7.19 contains an inefficient algorithmic complexity flaw in cJSON_Compare()
- CVE-2026-67217 MEDIUM 5.3 UPGRADE cJSON through 1.7.19 applies RFC 6902 JSON Patch operations non-atomically in apply_patch() in cJSON_Utils.c
FAQ
How do I fix cjson vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is cjson being exploited right now?
None of the tracked cjson CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which cjson CVE should I patch first?
CVE-2026-67215 currently ranks highest (49/100): cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC.